dlls/x11drv/xim.c

   1 /*
   2  * Functions for further XIM control
   3  *
   4  * Copyright 2003 CodeWeavers, Aric Stewart
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "config.h"
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <stdarg.h>
  25
  26 #include "windef.h"
  27 #include "winbase.h"
  28 #include "winuser.h"
  29 #include "wingdi.h"
  30 #include "winnls.h"
  31 #include "x11drv.h"
  32 #include "imm.h"
  33 #include "wine/debug.h"
  34
  35 WINE_DEFAULT_DEBUG_CHANNEL(x11drv);
  36
  37 /* this must match with imm32/imm.c */
  38 #define FROM_IME 0xcafe1337
  39
  40 BOOL ximInComposeMode=FALSE;
  41
  42 static HIMC root_context;
  43 static XIMStyle ximStyle = 0;
  44 static XIMStyle ximStyleRoot = 0;
  45
  46 /* moved here from imm32 for dll separation */
  47 static DWORD dwCompStringLength = 0;
  48 static LPBYTE CompositionString = NULL;
  49 static DWORD dwCompStringSize = 0;
  50 static LPBYTE ResultString = NULL;
  51 static DWORD dwResultStringSize = 0;
  52
  53 static HMODULE hImmDll = NULL;
  54 static HIMC (WINAPI *pImmAssociateContext)(HWND,HIMC);
  55 static HIMC (WINAPI *pImmCreateContext)(void);
  56 static VOID (WINAPI *pImmSetOpenStatus)(HIMC,BOOL);
  57 static BOOL (WINAPI *pImmSetCompositionString)(HIMC, DWORD, LPWSTR,
  58                                                DWORD, LPWSTR, DWORD);
  59 static VOID (WINAPI *pImmNotifyIME)(HIMC, DWORD, DWORD, DWORD);
  60
  61 /* WINE specific messages from the xim in x11drv level */
  62
  63 #define STYLE_OFFTHESPOT (XIMPreeditArea | XIMStatusArea)
  64 #define STYLE_OVERTHESPOT (XIMPreeditPosition | XIMStatusNothing)
  65 #define STYLE_ROOT (XIMPreeditNothing | XIMStatusNothing)
  66 /* this uses all the callbacks to utilize full IME support */
  67 #define STYLE_CALLBACK (XIMPreeditCallbacks | XIMStatusNothing)
  68 /* inorder to enable deadkey support */
  69 #define STYLE_NONE (XIMPreeditNothing | XIMStatusNothing)
  70
  71 /*
  72  * here are the functions that sort of marshall calls into IMM32.DLL
  73  */
  74 static void LoadImmDll(void)
  75 {
  76     hImmDll = LoadLibraryA("imm32.dll");
  77
  78     pImmAssociateContext = (void *)GetProcAddress(hImmDll, "ImmAssociateContext");
  79     if (!pImmAssociateContext)
  80         WARN("IMM: pImmAssociateContext not found in DLL\n");
  81
  82     pImmCreateContext = (void *)GetProcAddress(hImmDll, "ImmCreateContext");
  83     if (!pImmCreateContext)
  84         WARN("IMM: pImmCreateContext not found in DLL\n");
  85
  86     pImmSetOpenStatus = (void *)GetProcAddress( hImmDll, "ImmSetOpenStatus");
  87     if (!pImmSetOpenStatus)
  88         WARN("IMM: pImmSetOpenStatus not found in DLL\n");
  89
  90     pImmSetCompositionString =(void *)GetProcAddress(hImmDll, "ImmSetCompositionStringW");
  91
  92     if (!pImmSetCompositionString)
  93         WARN("IMM: pImmSetCompositionStringW not found in DLL\n");
  94
  95     pImmNotifyIME = (void *)GetProcAddress( hImmDll, "ImmNotifyIME");
  96
  97     if (!pImmNotifyIME)
  98         WARN("IMM: pImmNotifyIME not found in DLL\n");
  99 }
 100
 101 static BOOL X11DRV_ImmSetInternalString(DWORD dwIndex, DWORD dwOffset,
 102                                         DWORD selLength, LPWSTR lpComp, DWORD dwCompLen)
 103 {
 104     /* Composition strings are edited in chunks */
 105     unsigned int byte_length = dwCompLen * sizeof(WCHAR);
 106     unsigned int byte_offset = dwOffset * sizeof(WCHAR);
 107     unsigned int byte_selection = selLength * sizeof(WCHAR);
 108     BOOL rc = FALSE;
 109
 110     TRACE("( %li, %li, %ld, %p, %ld):\n", dwOffset, selLength, dwIndex, lpComp,
 111                                         dwCompLen );
 112
 113     if (dwIndex == GCS_COMPSTR)
 114     {
 115         unsigned int i,j;
 116         LPBYTE ptr_new;
 117         LPBYTE ptr_old;
 118
 119         if ((dwCompLen == 0) && (selLength == 0))
 120         {
 121             /* DO Nothing */
 122         }
 123         /* deletion occurred */
 124         else if ((dwCompLen== 0) && (selLength != 0))
 125         {
 126             if (dwCompStringLength)
 127             {
 128                 for (i = 0; i < byte_selection; i++)
 129                 {
 130                     if (byte_offset+byte_selection+i <
 131                         dwCompStringLength)
 132                     {
 133                         CompositionString[byte_offset + i] =
 134                         CompositionString[byte_offset + byte_selection + i];
 135                     }
 136                     else
 137                         CompositionString[byte_offset + i] = 0;
 138                 }
 139                 /* clean up the end */
 140                 dwCompStringLength -= byte_selection;
 141
 142                 i = dwCompStringLength;
 143                 while (i < dwCompStringSize)
 144                 {
 145                     CompositionString[i++] = 0;
 146                 }
 147             }
 148         }
 149         else
 150         {
 151             int byte_expansion = byte_length - byte_selection;
 152
 153             if (byte_expansion + dwCompStringLength >= dwCompStringSize)
 154             {
 155                 if (CompositionString)
 156                     CompositionString =
 157                         HeapReAlloc(GetProcessHeap(), 0,
 158                                     CompositionString,
 159                                     dwCompStringSize +
 160                                     byte_expansion);
 161                 else
 162                      CompositionString =
 163                         HeapAlloc(GetProcessHeap(), 0, dwCompStringSize +
 164                                     byte_expansion);
 165
 166                 memset(&(CompositionString[dwCompStringSize]), byte_expansion,
 167                         0);
 168
 169                 dwCompStringSize += byte_expansion;
 170             }
 171
 172             ptr_new =  ((LPBYTE)lpComp);
 173             ptr_old = CompositionString + byte_offset + byte_selection;
 174
 175             dwCompStringLength += byte_expansion;
 176
 177             for (j=0,i = byte_offset; i < dwCompStringSize; i++)
 178             {
 179                 if (j < byte_length)
 180                 {
 181                     CompositionString[i] = ptr_new[j++];
 182                 }
 183                 else
 184                 {
 185                     if (ptr_old < CompositionString + dwCompStringSize)
 186                     {
 187                         CompositionString[i] = *ptr_old;
 188                         ptr_old++;
 189                             }
 190                     else
 191                         CompositionString[i] = 0;
 192                 }
 193             }
 194         }
 195
 196         if (pImmSetCompositionString)
 197             rc = pImmSetCompositionString((HIMC)FROM_IME, SCS_SETSTR,
 198                                  (LPWSTR)CompositionString, dwCompStringLength,
 199                                   NULL, 0);
 200     }
 201     else if ((dwIndex == GCS_RESULTSTR) && (lpComp) && (dwCompLen))
 202     {
 203         if (dwResultStringSize)
 204             HeapFree(GetProcessHeap(),0,ResultString);
 205         dwResultStringSize= byte_length;
 206         ResultString= HeapAlloc(GetProcessHeap(),0,byte_length);
 207         memcpy(ResultString,lpComp,byte_length);
 208
 209         if (pImmSetCompositionString)
 210             rc = pImmSetCompositionString((HIMC)FROM_IME, SCS_SETSTR,
 211                                  (LPWSTR)ResultString, dwResultStringSize,
 212                                   NULL, 0);
 213
 214         if (pImmNotifyIME)
 215             pImmNotifyIME((HIMC)FROM_IME, NI_COMPOSITIONSTR, CPS_COMPLETE, 0);
 216     }
 217
 218     return rc;
 219 }
 220
 221 void X11DRV_XIMLookupChars( const char *str, DWORD count )
 222 {
 223     DWORD dwOutput;
 224     WCHAR wcOutput[64];
 225     HWND focus;
 226
 227     dwOutput = MultiByteToWideChar(CP_UNIXCP, 0, str, count, wcOutput, sizeof(wcOutput));
 228
 229     if (pImmAssociateContext && (focus = GetFocus()))
 230         pImmAssociateContext(focus,root_context);
 231
 232     X11DRV_ImmSetInternalString(GCS_RESULTSTR,0,0,wcOutput,dwOutput);
 233 }
 234
 235 static void X11DRV_ImmSetOpenStatus(BOOL fOpen)
 236 {
 237     if (fOpen == FALSE)
 238     {
 239         if (dwCompStringSize)
 240             HeapFree(GetProcessHeap(),0,CompositionString);
 241
 242         dwCompStringSize = 0;
 243         dwCompStringLength = 0;
 244         CompositionString = NULL;
 245
 246         if (dwResultStringSize)
 247             HeapFree(GetProcessHeap(),0,ResultString);
 248
 249         dwResultStringSize = 0;
 250         ResultString = NULL;
 251     }
 252
 253     if (pImmSetOpenStatus)
 254         pImmSetOpenStatus((HIMC)FROM_IME,fOpen);
 255 }
 256
 257 static int XIMPreEditStartCallback(XIC ic, XPointer client_data, XPointer call_data)
 258 {
 259     TRACE("PreEditStartCallback %p\n",ic);
 260     X11DRV_ImmSetOpenStatus(TRUE);
 261     ximInComposeMode = TRUE;
 262     return -1;
 263 }
 264
 265 static void XIMPreEditDoneCallback(XIC ic, XPointer client_data, XPointer call_data)
 266 {
 267     TRACE("PreeditDoneCallback %p\n",ic);
 268     ximInComposeMode = FALSE;
 269     X11DRV_ImmSetOpenStatus(FALSE);
 270 }
 271
 272 static void XIMPreEditDrawCallback(XIM ic, XPointer client_data,
 273                                    XIMPreeditDrawCallbackStruct *P_DR)
 274 {
 275     DWORD dwOutput;
 276     WCHAR wcOutput[64];
 277
 278     TRACE("PreEditDrawCallback %p\n",ic);
 279
 280     if (P_DR)
 281     {
 282         int sel = P_DR->chg_first;
 283         int len = P_DR->chg_length;
 284         if (P_DR->text)
 285         {
 286             if (! P_DR->text->encoding_is_wchar)
 287             {
 288                 TRACE("multibyte\n");
 289                 dwOutput = MultiByteToWideChar(CP_UNIXCP, 0,
 290                            P_DR->text->string.multi_byte, -1,
 291                            wcOutput, 64);
 292
 293                 /* ignore null */
 294                 dwOutput --;
 295                 X11DRV_ImmSetInternalString (GCS_COMPSTR, sel, len, wcOutput, dwOutput);
 296             }
 297             else
 298             {
 299                 FIXME("wchar PROBIBILY WRONG\n");
 300                 X11DRV_ImmSetInternalString (GCS_COMPSTR, sel, len,
 301                                              (LPWSTR)P_DR->text->string.wide_char,
 302                                              P_DR->text->length);
 303             }
 304         }
 305         else
 306             X11DRV_ImmSetInternalString (GCS_COMPSTR, sel, len, NULL, 0);
 307     }
 308     TRACE("Finished\n");
 309 }
 310
 311 static void XIMPreEditCaretCallback(XIC ic, XPointer client_data,
 312                                     XIMPreeditCaretCallbackStruct *P_C)
 313 {
 314     FIXME("PreeditCaretCalback %p\n",ic);
 315 }
 316
 317 void X11DRV_ForceXIMReset(HWND hwnd)
 318 {
 319     XIC ic = X11DRV_get_ic(hwnd);
 320     if (ic)
 321     {
 322         char* leftover;
 323         TRACE("Forcing Reset %p\n",ic);
 324         wine_tsx11_lock();
 325         leftover = XmbResetIC(ic);
 326         XFree(leftover);
 327         wine_tsx11_unlock();
 328     }
 329 }
 330
 331 /***********************************************************************
 332 *           X11DRV Ime creation
 333 */
 334 XIM X11DRV_SetupXIM(Display *display, const char *input_style)
 335 {
 336     XIMStyle ximStyleRequest, ximStyleCallback, ximStyleNone;
 337     XIMStyles *ximStyles = NULL;
 338     INT i;
 339     XIM xim;
 340
 341     ximStyleRequest = STYLE_CALLBACK;
 342
 343     if (!strcasecmp(input_style, "offthespot"))
 344         ximStyleRequest = STYLE_OFFTHESPOT;
 345     else if (!strcasecmp(input_style, "overthespot"))
 346         ximStyleRequest = STYLE_OVERTHESPOT;
 347     else if (!strcasecmp(input_style, "root"))
 348         ximStyleRequest = STYLE_ROOT;
 349
 350     wine_tsx11_lock();
 351
 352     if(!XSupportsLocale())
 353     {
 354         WARN("X does not support locale.\n");
 355         goto err;
 356     }
 357     if(XSetLocaleModifiers("") == NULL)
 358     {
 359         WARN("Could not set locale modifiers.\n");
 360         goto err;
 361     }
 362
 363     xim = XOpenIM(display, NULL, NULL, NULL);
 364     if (xim == NULL)
 365     {
 366         WARN("Could not open input method.\n");
 367         goto err;
 368     }
 369
 370     TRACE("X display of IM = %p\n", XDisplayOfIM(xim));
 371     TRACE("Using %s locale of Input Method\n", XLocaleOfIM(xim));
 372
 373     XGetIMValues(xim, XNQueryInputStyle, &ximStyles, NULL);
 374     if (ximStyles == 0)
 375     {
 376         WARN("Could not find supported input style.\n");
 377     }
 378     else
 379     {
 380         TRACE("ximStyles->count_styles = %d\n", ximStyles->count_styles);
 381
 382         ximStyleRoot = 0;
 383         ximStyleNone = 0;
 384         ximStyleCallback = 0;
 385
 386         for (i = 0; i < ximStyles->count_styles; ++i)
 387         {
 388             int style = ximStyles->supported_styles[i];
 389             TRACE("ximStyles[%d] = %s%s%s%s%s\n", i,
 390                         (style&XIMPreeditArea)?"XIMPreeditArea ":"",
 391                         (style&XIMPreeditCallbacks)?"XIMPreeditCallbacks ":"",
 392                         (style&XIMPreeditPosition)?"XIMPreeditPosition ":"",
 393                         (style&XIMPreeditNothing)?"XIMPreeditNothing ":"",
 394                         (style&XIMPreeditNone)?"XIMPreeditNone ":"");
 395             if (!ximStyle && (ximStyles->supported_styles[i] ==
 396                                 ximStyleRequest))
 397             {
 398                 ximStyle = ximStyleRequest;
 399                 TRACE("Setting Style: ximStyle = ximStyleRequest\n");
 400             }
 401             else if (!ximStyleRoot &&(ximStyles->supported_styles[i] ==
 402                      STYLE_ROOT))
 403             {
 404                 ximStyleRoot = STYLE_ROOT;
 405                 TRACE("Setting Style: ximStyleRoot = STYLE_ROOT\n");
 406             }
 407             else if (!ximStyleCallback &&(ximStyles->supported_styles[i] ==
 408                      STYLE_CALLBACK))
 409             {
 410                 ximStyleCallback = STYLE_CALLBACK;
 411                 TRACE("Setting Style: ximStyleCallback = STYLE_CALLBACK\n");
 412             }
 413             else if (!ximStyleNone && (ximStyles->supported_styles[i] ==
 414                      STYLE_NONE))
 415             {
 416                 TRACE("Setting Style: ximStyleNone = STYLE_NONE\n");
 417                 ximStyleNone = STYLE_NONE;
 418             }
 419         }
 420         XFree(ximStyles);
 421
 422         if (ximStyle == 0)
 423             ximStyle = ximStyleRoot;
 424
 425         if (ximStyle == 0)
 426             ximStyle = ximStyleNone;
 427
 428         if (ximStyleCallback == 0)
 429         {
 430             TRACE("No callback style avalable\n");
 431             ximStyleCallback = ximStyle;
 432         }
 433
 434         }
 435
 436     wine_tsx11_unlock();
 437
 438     LoadImmDll();
 439
 440     if (pImmCreateContext)
 441     {
 442         root_context = pImmCreateContext();
 443         if (pImmAssociateContext)
 444             pImmAssociateContext(0,root_context);
 445     }
 446
 447     return xim;
 448
 449 err:
 450     wine_tsx11_unlock();
 451     return NULL;
 452 }
 453
 454
 455 XIC X11DRV_CreateIC(XIM xim, Display *display, Window win)
 456 {
 457     XFontSet fontSet;
 458     char **list;
 459     int count;
 460     XPoint spot = {0};
 461     XVaNestedList preedit = NULL;
 462     XVaNestedList status = NULL;
 463     XIC xic;
 464     XIMCallback P_StartCB;
 465     XIMCallback P_DoneCB;
 466     XIMCallback P_DrawCB;
 467     XIMCallback P_CaretCB;
 468     LANGID langid = PRIMARYLANGID(LANGIDFROMLCID(GetThreadLocale()));
 469
 470     wine_tsx11_lock();
 471
 472     /* use complex and slow XIC initialization method only for CJK */
 473     if (langid != LANG_CHINESE &&
 474         langid != LANG_JAPANESE &&
 475         langid != LANG_KOREAN)
 476     {
 477         xic = XCreateIC(xim,
 478                         XNInputStyle, XIMPreeditNothing | XIMStatusNothing,
 479                         XNClientWindow, win,
 480                         XNFocusWindow, win,
 481                         NULL);
 482         wine_tsx11_unlock();
 483         return xic;
 484     }
 485
 486     fontSet = XCreateFontSet(display,
 487                       "*", /*FIXME*/
 488                       &list, &count, NULL);
 489
 490     TRACE("ximFontSet = 0x%x\n", (unsigned int) fontSet);
 491     TRACE("list = 0x%x, count = %d\n", (unsigned int) list, count);
 492
 493     if (list != NULL)
 494     {
 495         int i;
 496
 497         for (i = 0; i < count; ++i)
 498         {
 499             TRACE("list[%d] = %s\n", i, list[i]);
 500         }
 501         XFreeStringList(list);
 502     }
 503
 504     /* create callbacks */
 505     P_StartCB.client_data = NULL;
 506     P_StartCB.callback = (XIMProc)XIMPreEditStartCallback;
 507     P_DoneCB.client_data = NULL;
 508     P_DoneCB.callback = (XIMProc)XIMPreEditDoneCallback;
 509     P_DrawCB.client_data = NULL;
 510     P_DrawCB.callback = (XIMProc)XIMPreEditDrawCallback;
 511     P_CaretCB.client_data = NULL;
 512     P_CaretCB.callback = (XIMProc)XIMPreEditCaretCallback;
 513
 514     if ((ximStyle & (XIMPreeditNothing | XIMPreeditNone)) == 0)
 515     {
 516         preedit = XVaCreateNestedList(0,
 517                         XNFontSet, fontSet,
 518                         XNSpotLocation, &spot,
 519                         XNPreeditStartCallback, &P_StartCB,
 520                         XNPreeditDoneCallback, &P_DoneCB,
 521                         XNPreeditDrawCallback, &P_DrawCB,
 522                         XNPreeditCaretCallback, &P_CaretCB,
 523                         NULL);
 524         TRACE("preedit = 0x%x\n", (unsigned int) preedit);
 525     }
 526     else
 527     {
 528         preedit = XVaCreateNestedList(0,
 529                         XNPreeditStartCallback, &P_StartCB,
 530                         XNPreeditDoneCallback, &P_DoneCB,
 531                         XNPreeditDrawCallback, &P_DrawCB,
 532                         XNPreeditCaretCallback, &P_CaretCB,
 533                         NULL);
 534
 535         TRACE("preedit = 0x%x\n", (unsigned int) preedit);
 536     }
 537
 538     if ((ximStyle & (XIMStatusNothing | XIMStatusNone)) == 0)
 539     {
 540         status = XVaCreateNestedList(0,
 541             XNFontSet, fontSet,
 542             NULL);
 543         TRACE("status = 0x%x\n", (unsigned int) status);
 544      }
 545
 546     if (preedit != NULL && status != NULL)
 547     {
 548         xic = XCreateIC(xim,
 549               XNInputStyle, ximStyle,
 550               XNPreeditAttributes, preedit,
 551               XNStatusAttributes, status,
 552               XNClientWindow, win,
 553               XNFocusWindow, win,
 554               NULL);
 555      }
 556     else if (preedit != NULL)
 557     {
 558         xic = XCreateIC(xim,
 559               XNInputStyle, ximStyle,
 560               XNPreeditAttributes, preedit,
 561               XNClientWindow, win,
 562               XNFocusWindow, win,
 563               NULL);
 564     }
 565     else if (status != NULL)
 566     {
 567         xic = XCreateIC(xim,
 568               XNInputStyle, ximStyle,
 569               XNStatusAttributes, status,
 570               XNClientWindow, win,
 571               XNFocusWindow, win,
 572               NULL);
 573     }
 574     else
 575     {
 576         xic = XCreateIC(xim,
 577               XNInputStyle, ximStyle,
 578               XNClientWindow, win,
 579               XNFocusWindow, win,
 580               NULL);
 581     }
 582
 583     TRACE("xic = 0x%x\n", (unsigned int) xic);
 584
 585     if (preedit != NULL)
 586         XFree(preedit);
 587     if (status != NULL)
 588         XFree(status);
 589
 590     wine_tsx11_unlock();
 591
 592     return xic;
 593 }